My neighbors can't figure out how I'm getting my Brandywine Heirloom tomatoes to grow so big. Best I've used, and a good value. Use in correct ratio with Humbolt Master A for best results. Keep your pH around 6 for the plant roots to be able to absorb the nutrients efficiently.
We use this on a daily basis.. Its a fraction of the price here, as compared to our local Grow Supply Co. This product, when used as directed along with other Humboldt products provides us the most beautiful and bountiful Medical Plants I have ever seen.